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Organic vapor sensing properties and characterization of [alpha]-naphthylmethacrylate LB thin films
Ist Teil von
Journal of macromolecular science. Part A, Pure and applied chemistry, 2019-01, Vol.56 (9), p.845
Ort / Verlag
New York: Marcel Dekker, Inc
Erscheinungsjahr
2019
Link zum Volltext
Quelle
Taylor & Francis Online
Beschreibungen/Notizen
Determination of organic vapor sensing properties of α-Naphthylmethacrylate (α-NMA) monomer based Langmuir-Blodgett (LB) thin films was aimed in this study. LB thin film fabrication was performed on quartz glass and quartz crystal substrates in order to investigate the characterization and organic vapor properties of α-NMA materials by using UV-Visible, Atomic Force Microscopy (AFM) and Quartz Crystal Microbalance (QCM) techniques. π-A isotherm graph was taken and a suitable surface pressure value were primarily determined as 13 mN m-1 for successful α-NMA LB thin film fabrication. Transfer ratio value was found to be [greater than or equal to] 0.93 for quartz glass and quartz crystal substrates. The typical frequency shift per layer was obtained as 16.93 Hz/layer and the deposited mass onto a quartz crystal was calculated as 271.30 ng/layer (1.02 ng mm-2). The sensing responses of α-NMA LB films against dichloromethane, chloroform, toluene and m-xylene were measured by QCM system. Dichloromethane created the maximum shift in the resonance frequency than other organic vapors used in this study. Results exhibited that α-NMA LB thin films were potential candidates for organic vapor sensing applications, especially high sensitive detection of dichloromethane at room temperature.